--- Rakefile.old	2013-08-20 01:00:05.000000000 +0200
+++ Rakefile	2013-10-21 19:42:06.800019343 +0200
@@ -125,8 +126,8 @@
 }) do |t|
   po_file, mo_file = t.source, t.name
   puts "#{po_file} => #{mo_file}"
-  require 'gettext/utils'
-  GetText.rmsgfmt po_file, mo_file
+  require 'gettext/tools'
+  GetText::Tools::MsgFmt.run po_file, mo_file
 end
 
 task :check_po_tools do